The government has confirmed plans to fast-track Heathrow Airport’s long-delayed third runway, with ministers promising the UK will “experience the benefits sooner” from the £50bn expansion project.
Transport Secretary Heidi Alexander announced on Thursday that work has begun on a new Airports National Policy Statement (ANPS), setting out the framework for airport expansion across the country. The updated statement — expected to be published for consultation by summer 2026 — will pave the way for a final government decision on Heathrow’s runway before the end of the current Parliament.
Alexander said the updated policy is needed to reflect new environmental and climate obligations, but reaffirmed the government’s commitment to delivering a third runway at Heathrow by 2035.
“Today is a critical building block which will advance plans for the delivery of a third runway at Heathrow, meaning people can start to experience the full benefits sooner,” she said. “Enabling Heathrow expansion will drive economic growth and create jobs across the country.”
The revised ANPS will incorporate Labour’s four key tests for any airport expansion — covering climate impact, noise pollution, air quality and economic growth — and will align with the UK’s net zero targets, according to the Department for Transport (DfT).
Both Heathrow Airport and the Arora Group, which has proposed an alternative runway design, have been asked to submit additional details before ministers select a preferred scheme in November.
Heathrow’s chief executive, Thomas Woldbye, said the airport’s plan was “the only option that can be approved by 2029 and be up and running within a decade”, urging ministers to act swiftly “so we can move from talking to building”.
The expansion comes amid a wave of approvals for London’s other airports, including Luton and Gatwick, both cleared to grow their capacity earlier this year. The DfT said Heathrow’s expansion would be privately financed with “no cost to the taxpayer”, and emphasised that sustainable aviation fuel (SAF) would be critical to ensuring the enlarged airport contributes to the UK’s climate goals.
Business groups broadly welcomed the move. The British Chambers of Commerce said the new runway would “boost trade, attract investment, improve connectivity, and deliver wide-ranging benefits for the economy.”
However, environmental and political opposition remains fierce.
Ruth Cadbury, chair of the Commons Transport Committee, said the government had failed to reconcile the expansion with its climate commitments.
“It’s like trying to slow the car by hitting the gas — and that’s a cause for serious concern,” she said.
Paul McGuinness, chair of the No 3rd Runway Coalition, called the project “stubbornly misguided”, arguing that ministers have “still not demonstrated an economic case or capacity requirement.”
Meanwhile, Green Party transport spokesperson Siân Berry accused the government of prioritising “wealthy frequent flyers” over local communities.
If approved, the third runway would mark the largest expansion in Heathrow’s history — and a defining test of the government’s pledge to balance economic growth with climate responsibility.